King Banhammer was the Royal, human and final Ruler of Faq before he was croaked.Erf-b1-p082 Jillian Zamussels is his daughter and an heir to his throne. His rule was, until the end, peaceful and avoided conflict.
He had multiple Casters. In order to remain out of the conflict that rages across Erfworld, he relied on his Foolamancer (Jack Snipe) and Predictamancer (identity unknown) to conceal his cities. He had few Warlords and did not think much of them, lacking any use for them.Erf-b1-p082
After his Predictamancer foretold the eventual fall of the kingdom, King Banhammer ordered an heir popped. The heir, Jillian, did not have the philosophical temperament Banhammer had hoped for, leading to problems in their relationship. According to Jillian, Banhammer was very rule-bound, obsessed with philosophy, and uninterested in military matters.Erf-b1-p082.
King Banhammer was croaked during the assault on Faq by Stanley the Plaid. This attack was orchestrated by Wanda Firebaugh in an attempt to pry the Arkenhammer from Stanley, but the plan failed when Stanley proved too powerful.
Banhammer may have intentionally caused the strife between himself and his daughter. Popping an heir would not have changed the Prediction concerning his Kingdom: With or without an heir, it would still have been destroyed. From Jillian's temperament, he would know that she would have died in glorious battle defending her kingdom futilely making her popping a waste of effort; however, by being away from Faq at the time of its fall, she would become a Barbarian Warlord at his croaking, then could return to Faq and reclaim it, resurrecting and rebuilding the dead Side.
Real World References
His name is a reference to the power wielded by an administrator to ban or block users of internet media.
His name might also be a reference to the proverb "He who lives by the sword, dies by the sword", since he and his city were defeated by the power of the Arkenhammer.